Oiling system.



A. L. DE LEEUW.

OILING SYSTEM.

APPLIUATION FILED FEB.9, 1914 1, 1 02, 1 86. Patented June 30, 19m

3 SIIEE'IS'SHEET 1.

61 Hamlet 0 A. L. DE LEEUW.

OILING SYSTEM.

APYLIUAILON FILED YEB.9,1914.

Patented June 30, 1914.

3 SHEETSSHEBT 2.

a W ital/WI Suva "fez v 1t moses A. L. DE LEBUW.

OILING SYSTEM.

APPLICATION FILED FEB. 9, 1014 1,1 ()2, 1 86. Patented June so, 1914b 3$$HEETS--SHEET 3.

W an vemto'c 'tion to the bearings. This system, wh

TED STATES PATENT orrion'.

ADOLPH L. DE LEEUW, 0F CINCINNATI, OHIQM IGNOR. TO 'IYHE QINGINNATI1MIIIIIING MACHINE vGOJYIIBAIQI'Y, OF OAKLEY, HIO, .A'GDRPDMHON -01? OHIO.

QILING SYSTEM.

Original application filed J'une'fl3, 11813,

relates'to a'mflchine tool-oiling system and it proposes'ra frame organization such that oil will'be automatically elevated from a lower- -most well or point to an uppermost reservoir or oil course, from which it will be gravimetrically. distributed to the various bearings, either by means of conduits integral-Withthe main casting or frame of the machine or by 'individual' pipes leading from said oil course.

A primary object of this invention is to create a 'gravimetrieal oi'l distributing structure in which oil will bekept in continuous circulation through all of the wearing surfaces, and will be ultimately drained by gravity to an oil well, and then elevated against gravity to an uppemnostdistributmg point, and then :permitted to gravitate along appropriate channels to bearings arrange in a true ramification or parallel relation,

as distinguished from the usual multiple se- 1 ries, so that each bearing releases its contaminated oildireetly to "the well, and not;

to other bearings.

H'eretdfore an oiling system has been roposed in'which oil was drawn from awe l n the frame of the machine andthen distrib- ,uted'to an uppermost bearing. Such small quantities of oil as passed through this hearing was released in a consl'deralol contaminated condition by reason of t concen trated effect and in this state it was caused to pass throughanotherbearing, which further contaminated it, and in turn released'lt into another bearing, and so on,-until ultimately it was permitted to return to the oil well after having been successively contaminated by passing in sequence through several bearings. When'it reached the 011 well it was of course diluted by a larger mass of oil so that it was suitable for reap llcae not injurious on the first reached hearing, was objectionable as to subsequent bearings, for

Specification of Lettm'slabent.

semi'mqzvsam. Divided and this-application filed Februaryb, 1814. 'SeIiaI'NO. 017M615.

Patented, J 1111030,, 1914.

the reason that the latter received oil contaming an undue percentage of impurity. A drop of highly contaminated o'il added to the well would :be so diluted as to be liarmlessso that a dropstaken from the well would represent good 'lubricatin material, but as soonas this drop passed t rou h the first hearing it would be contaminate by a certain percentage of impure matter, the percentage of coursebeing'ver much higher than before it passed throng the bearing, i.-e., much higherthan the average value of the bulk of oil in the well. To add this contaminated drop to the next hearing is bad practice, because of its increased contamination, and after it had passed through the second hearing it would be still further contaminated and even less fit for the third bearing, and so on.

like ramified construction proposed by this invention overcomes the above-mentioned objections, for the same quality of oil is fed to each bearing this qua'li being the average valueof the bulk of oil in the well, and when the oil has been enriched-with contamination by passing through the'bearing it is-discharged directly into the well, nd thus its impurities are greatl diluted be ore it reaches the next hearing y recirculation through the system.

Another object is to render available a Simple frame design that will automatically effect the oiling of the various bearings in the way aforesaid,without requiring an'extensive builtup structure, and by enabling the major features to be produced by a simplecasting rocess in the foundry.

Another 'ect isto devise a millin machine frame t at will especially provi e for this system of oil distribution.

Other objects will be in part obvious from the annexed drawings and in partindicated in connection therewith by the following analysis of this invention.

This invention accordingly consists inthe features of construction, combination of parts, and in the unique relationsof the members and in the relative proportioning and disposition thereof; all as more completely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they may embody t e same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form have beenrannexed as a part of this disclosure, and in such drawings, like characters of reference denote corresponding parts through-" out all the views, of which Figure 1 is a side elevation partly in section of a milling machine frame embodying w the oil distributing characteristics proposed by this invention. Fig. 2 is a detailed section taken through line 22 of Fig. 1, showing further details of the same. Fig. 3 is a side elevation partly in section of a milling 5 machine having a vertical spindle also embodyingthe features of this invention. Fig. I

the column, a pocket 7 is formed by means of the side walls of the frame and a trans-' verse web 8 which is contoured to form the features to be hereinafter described. An o1lpipe 9 terminates in a vent which discharges into the pocket 7 at anysuitable point thereof, for example from the exterior of the frame, and this pipe enables oil to be forced up into said pocket in abundant quantities by an oil pump 10 mounted on the base of the machine and driven by a belt V111. and

pulleys 12 and 13 from the main driving to shaft 14 of the machine.

Leading in opposite directions from the pocket 7 are shown two spill-ways 15 and 16 which are preferably crowned slightly, as shown by Fig. 2, to form gutters 17. At a point slightly above the gutter 17 in one of its spill-ways, as for example in the spillway 16, is a discharge'aperture 18 from which leads an overflow pipe 19 directed toward the bottom of the column, and through 0 which the overflow or excess oil delivered by the pump will flow. The spill-way .15 andthe gutter 17 thereof lead to a pocket 20 above the front bearing of the spindle, shown by the drawings as typical of a rotating member such as ashaft, and an oil duct 21 permits the Oll to drain to the wearing surfaces, and from the latter it flows ultimately to the oil well in the base. In like manner the spill way 16 drains into a pocket 22, which, by means of a duct 23 similarly supplies the rear bearing of the shaft or spindle.

At a suitable point in the side of the frame is an opening 24, and bolted into this open-' ing is a drive-unit 25 which as a matter of convenience 1S separately manufactured as a distinct structural entity and. contains sundry gear-wheels and shafts constituting a power transmitting organization, and which is subsequently bolted'in place to form a part of the main frame or column 2, and thus conveniently provide the main frame with such supplementary shafts, gears vand bearings as maybe desired. This transmis sion unit provides extensions 26 and 27 that enter the interior of the column and the upper surfaces ofwhichare provided with canals 28 and 29 having suitable rillles for diverting oil and havin suitable oil ducts 30 and 31 for feeding 011 from the same to the bearing. These canals are supplied with so oil by means of pipes 32 and 33 that lead from pockets 22 and 20 and which are bent into position to bring their lower ends above the upper portions of the canals 28 and 29. Another gear insert unit is indicated by '34, 35

and in this instance, it-constitutes a speed change organization, and it supplied with oil preferably from the overflow pipe 19. The construction of these insert units will be further detailed in connection with the to .vertical spindle machine. It may be noted,

however, that the various shafts, gears, etc.,. wh ch are additional or supplementary to the'shaft or spindle abovedescribed, may- .inthis way be assembled in final fixed relation with the frame more'accurately and.

more conveniently than by securing them directly to the frame, though they will be oiled equally well in either way by this sys- Item. After the 'oil has left the various Wearing surfaces aforesaid, it flows to the base of-the machine and through an opening 36 to what may be termed an oil well 37 from which it is raisedbythe pump 10 as "aforesaid. That isto say, the term oilwell as used herein signifies the 'pocket or trap to which the oil gravitates ultimately and from which itis raised against gravity by the action of the pump. That is to say, the term oil well is descriptive of the ultimate point of gravitation and is to be distinguished from the term reservoir which is indicative of a capacity for retaining a bulkvof oil, so that the? Well may or may not exercise the functions of a reservoir, 1 depending upon its capacity or volume.

The vertical spindle organization is shown more clearly by Figs. 3 and a, and-will now lie-described. The column 40% of this ma- I chine rises from a suitable base stand ter minates in a head 42 in'which is -"ournaled the vertical spindle 13 by means of bearings 4-4 and 45. At its upper end, an annular reservoir 46 is provided,, .vvhich discharges the oil by means of an overflow 47 onto a 125 web 48 preferably cast integral with. the frame The oil is conveyed to the bearing 4:4: by means of the groove 49 leading from the annular reservoir 16, and it passes down the spindle to the lower bearing to from which 1% 85. "and discharging from the various bearings base. It is to be noted here that although in this instance. the oil flows from the bearing 44 to the bearing 45, no undue contamination is experienced, since the bearing 44 carries hardly any load at all, it. being re lieved from thrust-by the bearipg 45, The

b 8 mama,ma nat orrnlh .vmg.

an upturned edge or H 52 which. inc ines r mh ea 2 t w th e r nd f the column, andisuitably s aced are. dams 53 and 54 that divert the oil sufficiently, to cause it to flow down small drain ipes,'55 ,'56. and 57. The drain 55 leads to he forward bearing58 of a driving shaft 59, andlthe pi l a t e r b ar e a d: he. a nd a er the oil has passed'through these bearings, it dribbles doivn the frame of-fthe machine toward, the base, and into th oil w ll Th sw u n, l l h f h ho izontal spindle, alsohas a s'imi ariop enipg. Qtthat ceives a similar transmission un t'25contain: ing frame extensions 26, andj21 providing ca: na s 28am], 2?, from which lead ducts 31 and 32 to thevarions beari of the transmission -unit. Thus, the canal 2 provides. a pool- 60,

into which oil is directly'delivered'by the p n d t n o rflo s h e e Q -t pool 60 and passes down the canal," eing di verted at intervals, by means of dams. 61

and 62 to insure itsfi ow through the ducts h v se ear gs, s hawn b F 4. The oil; overflowing he canals 28 and 29 then passes directly to the oilwell in the base. Leading from a lowerpoint of the web 4 8 is an overflow 63 that discharges into the pool 64 of the speed change insert unit 34, and the oil then fiows over the spill way 65and thensuccessive dams66 and 67, and finally through the discharge gutter 68 down throu h the well. Ducts or oil holes 69 lead to t e variousbea rings ofjthisunit, and the latter in turn discharge the'co'ntaminated oil to the central well, where itis diluted and returnedto the system:

It will thus be perceived that this invention is well adapted to achieve the objects aforesaid in 'a simple and direct manner, and in a way preventing the admission of unduly contaminated oil onto any of the bearings. Without further elaboration, the foregoing will so fully reveal the gist of this invention that others can by applying current knowledge readily ada t it for various applications without omitting certain features that, from the standpoint of the prion art, fairly constitute essential characteristics of the generic or specific aspects of this invention, and therefore such adaptations should and are intended to be comprehended within the meaning and range of equivalency of the following claims.

vatin a. it nation of the nature disclosed combining a' to said-oilvent. I 4: A machine-tool oil-distributing organi- Having thus revealed my invention, I claim as new and desire to secure by- Letters Patent of the United States 1. A, machine-tool oil-distributin organization of the nature disclosed com ining a hollow frame having two horizontally alined a .ertures forming spindle bearings, a spind e journaled horizontally. in said bearings, said frame providing an oil vent elevated above the axis of said spindle and located between its ends and having a right and left oihdrainage into, each of said bearings and also havingan overflow located, higher than. said oil drainage, supplementary bearings receiving oil from saidfoverflow, an oil well at, a lower portion of said frame, and a ump for elevating Oll trom said'well to said oil vent.

2. A machine-tool oil-distributingprganh zatioh of the nature disclosed combining a hollow frame having two horizontally alined a ,ertures forming spindle-bearings, a spin,-

d e jonrnaled horizontally. in said bearings, said frame. being internally provided With an oil vent elevated above. theaxis ofsaid spindle and having an oilsdrainage into,

, each, of saidbearings and also. having. an,

overflow for permitting the return ofex-. cess oil, so plementary bearings receiving oil from said overflow, an oil-well; at alower portion of said frame, and a pump for ele oil from said well to said-oil vent.

machine-tool oil-distributing organihollow frame having two horizontally alined apertures forming spindle-bearings, a spindle journaled horizontally, in said bearings, said frame. providing an oil vent elevated.

. above the axis of said 'spindle and having an oil-drainage into each, of said bearings, and,

alsohavingan overflow located higher than said oil-drama a, supplementary bearings below said spin e, a .pipelending from said overflow and discharging oil on said bearings, an oil-well at, a, lpwer' portion ot'said, frame, and a pump for elevating oil fromsaid well zation of the nature disclosed combining a hollow frame havingtwo horizontally alined apertures forming spindle-bearings, a spindle journaled horizontally in said bearings, said frame providing-an oil vent elevated above the axis of said spindle and having an oil-drainage into each of said bearings and also having an overflow located higher than said oil-drainage, supplemental bearings receiving oil directly from sai overflow, other bearings located between said spindle and said supplementary bearings andreceiving oil independentl thereof, an oil-well at a lower portion 0 said frame,

and a um'p for elevating oil from said well to oil vent. o

5. A machine-tool oil-distributing organization of the nature disclosed combining a hollow frame provided interiorly with a shelf-like oil-distributing canal arranged in an upperportion of the frame; a pipe extending upwardly from alower point in said frame and terminating at an upper point thereof; acontinuously driven pump for raising oil through said pipe whereby it may be continuously discharged into said canal; a plurality of bearings mounted in said frame lower than said canal; a series of conduits leading from said canal at different points thereof, each conduit delivering oil directly to the bearings associated therewith, wher'eby each bearing will receive oil in the state of purity delivered by said pump and uncontaminated by passage through a previous bearing; a lower portion of said frame being constructed to receive the oil from all of said bearings and to divert the same to the lower end of said pipe] 6. A machine-tool oil-distributing organi-- zatidn of the nature disclosed combining a hollow frame provided internally with an of the frame; said lower portion being constructed to receive the oil drainingfrom said bearings and to deliver the same to said means embodying the pump.

7. A machine-tool oil-distributing organi zation of the nature disclosed coinbining a hollow frame internally provided with pockets such as 20 and 22 adapted to serve as small oil-reservoirs; a plurality of beariaoaiee Wings arranged within said frame below said pockets; a conduit leading from each of said pockets and adapted to deliver oil therefrom to one of said bearings; means embodying a pump for continuously withdrawing oil point relative to said frame; said frame be ing provided with means for receiving said oil and for" delivering the same to said pockets and for permitting excess oil to-over flow toward the lower portion of said frame; said lower portion being constructed to reand-to deliver thesame to said means.

8. A machine-tool oil-distributing organization of the nature disclosed combinin a hollow frame providing'a shelf-like oilistributing canal arranged in its upper part; a first bearing directly adjacent said canal said canal having an oil-duct opening through its-'wall and leading directly to said immediately adjacent bearing; a second and located lower than the same; .apipe leading from said canal and adapted to deliver oil to said second bearing; means embodyinga pump'for continuousl withdrawsaid bearings and conveying the same upwardly against gravity and finally discharging said oil into said canal; a lower portion of said frame being constructed to receive the oil draining from said bearings and to direct the same to the said means; and means whereby excess oil in said canal may escape to the lower part of said canal.

lln Witness whereof, I hereunto subscribe my name; as attested by the two subscribing witnesses,-

"ADOLPH LDE renew,

Witnesses i 4 SOL EINSTEIN,

Ronnn'r 'll. ll-llaznmon.

from a point below said bearings and conveying the same against gravity to an upper cei've the oil draining from said bearings bearing further removed from said canal 'ing oil from a point in said raine below- 

